import axios from 'axios'
import { MessageBox, Message } from 'element-ui'
import store from '@/store'
import { getToken } from '@/utils/auth'

// create an axios instance
const service = axios.create({
    baseURL: process.env.VUE_APP_BASE_API, // url = base url + request url
    withCredentials: true, // send cookies when cross-domain requests
    timeout: 5000, // request timeout
})

// request interceptor
service.interceptors.request.use(
    (config) => {
        // do something before request is sent

        if (store.getters.token) {
            // let each request carry token
            // ['X-Token'] is a custom headers key
            // please modify it according to the actual situation
            config.headers['Authorization'] = 'Bearer ' + getToken()
        }
        return config
    },
    (error) => {
        // do something with request error
        console.log(error) // for debug
        return Promise.reject(error)
    }
)

// response interceptor
service.interceptors.response.use(
    /**
     * If you want to get http information such as headers or status
     * Please return  response => response
     */

    /**
     * Determine the request status by custom code
     * Here is just an example
     * You can also judge the status by HTTP Status Code
     */
    (response) => {
        const { status, data } = response
        const res = data

        // if the custom code is not 20000, it is judged as an error.
        if ([200, 201, 304].indexOf(status) < 0) {
            Message({
                message: res.message || 'Error',
                type: 'error',
                duration: 3 * 1000,
            })

            // 50008: Illegal token; 50012: Other clients logged in; 50014: Token expired;
            if (status === 50008 || status === 50012 || status === 50014) {
                // to re-login
                MessageBox.confirm(
                    'You have been logged out, you can cancel to stay on this page, or log in again',
                    'Confirm logout', {
                        confirmButtonText: 'Re-Login',
                        cancelButtonText: 'Cancel',
                        type: 'warning',
                    }
                ).then(() => {
                    store.dispatch('user/resetToken').then(() => {
                        location.reload()
                    })
                })
            }
            return Promise.reject(new Error(res.message || 'Error'))
        } else {
            const { statusCode, message } = res

            if ([202, 400].includes(statusCode)) {
                Message({
                    message: message || 'Error',
                    type: 'error',
                    duration: 3 * 1000,
                })
                return Promise.reject(res)
            }
            return res
        }
    },
    (error) => {
        console.log('err' + error) // for debug
        Message({
            message: error.message,
            type: 'error',
            duration: 5 * 1000,
        })
        return Promise.reject(error)
    }
)

export default service